Before changing washroom plumbing in a business, it is worth considering how many people will use the facilities, any welfare and accessibility requirements that apply, whether the drainage and water supply can cope, and how the work will affect the business while it is carried out. Planning these early can help avoid costly changes later.
Washrooms in busy premises often need different planning from a home bathroom. They are used more often, by more people, and are usually expected to stay available during opening hours.
How Many People Will Use It
The number of staff, customers or visitors who will use the washroom affects how many toilets and basins are needed. HSE guidance on the Workplace (Health, Safety and Welfare) Regulations 1992 includes a table of minimum numbers of toilets and washbasins based on how many people work at the premises.
The needs of the business matter too. A café, a gym and an office may all need different numbers and types of fixtures, even with similar numbers of people.
Busy facilities also put more demand on supply pipes and drainage, so existing pipework may need checking before more fixtures are added.
Accessibility and Building Regulations
Changes to washrooms may need to consider accessible facilities, and building regulations may apply to some work, especially where new drainage connections or layout changes are involved. It is worth checking with building control or a suitable adviser before plans are finalised.
This is a separate matter from the plumbing itself, but it can affect where fixtures go and how much space is needed.
Water Supply Notification
Under the Water Supply (Water Fittings) Regulations 1999, extending or altering a water system on premises other than a house is one of the types of work that must be notified to the water company before it starts. Some other installations, such as certain pumps, also need notice.
Notification gives the water company the chance to check the plans. Your water company can advise on what applies.
Keeping the Business Running
Washroom work can mean some facilities are out of use for a period. It may be possible to phase the work, keep some toilets available or arrange temporary facilities. Agreeing timings and access in advance can reduce disruption for staff and customers.
If the building is shared, the landlord or managing agent may need to approve the work, and other occupiers may need to be told if the water supply will be turned off.
Choosing durable fixtures and planning access to valves and wastes can also make future repairs easier and quicker.
Our page on commercial plumbing services explains how plumbing changes for business premises are planned and carried out.
If you are planning changes to washroom plumbing at your Poole business, a plumber can look at the existing system and explain what may be involved.